Locomotive.



Patented Feb. 8, 1916.

8. M. VAUCLAIN.

LOCOMQTIVE.v

APPLICATION FILED NOV. 18. 1914.

' ments in compound locomotives inders at one UNITED STATES PATENTorrioii.

SAMUEL M. VAUCLAIN, 0F PHILADELPHIA,

PENNSYLVANIA, ASSIGNOR TO THE BALDWIN LOCOMOTIVE wonxs, or PHILADELPHIA,PENNSYLV NIA, A 00320- narrou or PENNSYLVANIA.

. Locomo'nvn Patented'Feb. 8, 1916.

Application filed November 18, 1914. Serial No. 872,841.

To all whom it may concern:

Be it known that I, SAMUEL M. VAU- oLAIN, a citizen of the UnitedStates, residing in Philadelphia,Pennsylvania, have invented certain Imptives, of which the following is a specification. I My invention relatesto certain improveof the centipede type, i. e., the type in which thereare three pairs of cylinders. In this instance there are threeindependent frames connected by articulated joints and two cylinders aremounted on each frame, one at each side of the locomotive. There areeight driving wheels for each set, but it will be understood that theconstruction may be modified without departing from the essentialfeatures of the invention.

-One object of the invention is to couple the cylinders so that one highpressure cylinder will exhaust into two low pressure cylend of thelocomotive and the other high pressure cylinder will exhaust intothe twolow pressure cylinders atthe opposite end of the locomotive.

Another object of the invention is to make all of the cylinders of thesame size, thus rovements 1n Locomomaterially economizing in the cost ofthe manufacture of a locomotive.

A stillfurther object of the invention is to arrange the cylinders sothat the pipes leading from the boiler to the high pressure cylinderwill be fixed in relation to the cylinder and boilerwhile the jointedpipes will carry the low pressure steam leading from the high pressurecylinder to the low pressure cylinders.

These objects, and other advantageous ends, I secure as hereinafter setforth reference being had to the accompanying drawings, in which:

Figure 1 is a side view in diagram, illustrating my invention as appliedto a centipede type of locomotive; and Fig. 2 is a lan view of thecylinders and their connecting pipes.

Referring to the drawings, 1 is the boiler frame 7 of a locomotive,having a fire box 2 at one end and a smoke box 3 at the opposite end.

4 is the cab of the locomotive 1n the present instance.

5 is the tender.

6 is the intermediate frame. ward frame and 8 is the rear 7 is theforframe. These frames are connected together by articu-' lated joints,as fully set forth in the patent granted to George R. Henderson, No.1,013,771, dated January 2, 1912.

' The boiler is rigidly secured to the central frame 6 and swings overThe rear frame carries the tender 5. Mounted on the intermediate frameare the high pressure cylinders 9 and 10, one located on one s1de of thelocomotive and the ,other located on the opposite side, as clearlyillustrated in Fig.

2. Each .of these cylinders is provided with a steam chest 11 of any ofthe ordinary types. On the forward are mounted the low pressurecylinders 12 and on the rear frame 8 are mounted the low pressurecylinders 13.

14 is a pipe leading from the steam dome of the boiler 1 through thesmoke box'and is connected to pipes, one on each side of the locomotive,asshown in Fig. 2. The pipe 14 may be connected, as shown, to asuperheater 16 having pipes the tubes of the boiler. The pipes 15 arerigidly connected both with the boiler and with the steam chest of thecylinders 9 and 10, as the frame 6 on which the cylinders are mounted isrigidly secured to the boiler so that there is no need of any splitjoints, or-other loose connections.

The cylinder 10 exhausts into a pipe 17 leading to the steam chest ofthe'low pressure cylinders 12 at the forward end of the locomotive. Assteam from the cylinder 10 exhausts into bothcylinders 12 it actsexpansively in said cylinder. The pipe 17 is flexibly connected at 18 tothe cylinder structure 19 of the high pressure cylinders 9 and 10 andthere is a flexible joint 20 in said pipe near the low pressurecylinders 12 as the frame 7, on which the. cylinder 12 is the frontframe 7.v

which extend into mounted, is ivotally connected to the frame 6 on whichthe cylinders 9 and 10 are mounted. Low pressure steam passes throughthis pipe and it can be packed against leakage, which is practicallyimpossible when a telescopic and jointed pipe is used for the passage ofthe high pressure steam. The h1gh pressure cylinder 9, in the presentinstance, exhausts into a pipe 21 leading to the steam chest of the lowpressure cylinders 13 and the pipe is flexibly connected at 22 with thestructure 13 of the low pressure cylinders and has a telescopic joint23. The low pressure cylinders 12 exhaust through a pipe 24 and throughthe nozzle 25 into the smoke box of the boiler 1, acting to create adraft through the stack and the boiler. The cylinders 13 exhaust througha pipe 26 whlch is connected to the exhaust pipe 27 at the rear of thetender. Intermediate of the pipes 26 and 27 is the feed water heater 28,located under the tender. This feed water heater is connected with thewater compartment of the tender and with the water supply of the boiler.

Bythe above construct1on, 1t Wlll be understood that high pressure steampasses from the boiler directly to the high pressure cylinders which arerigidly connected to the cylinders carried b the frame on whlch theboiler is also rigid y mounted and both sets of low pressure cylinders,which are pivoted to the central frame, are connected respectively tothe two high pressure cylinders through the flexible plpes and as theseflexible pipes convey the low pressure steam there is not the samedanger of leakage as there would be if they conveyed the high pressuresteam.

While I have illustrated the exhaust from the rear cylinders as passingthrough the feed water heater, and the main steam pipe 14 as connectedwith the superheater 16, these elements may be omitted without departingfrom the essential features of the invention.

I claim:

1. The combination in a locomotive, of three pairs of cylinders spacedapart; a boiler; high pressure pipes leading from the boiler to acentral pair of cylinders; a low pressure pipe leading from one of thehigh pressure cylinders to the two low pressure cylinders at one end;and a second pipe leading from the other high pressure cylinder to thelow pressure cylinders at the opposite end.-

2, The combination in a locomotive, of three frames pivotally connected;driving mechanism on each frame; two cylinders on each frame; a boilerrigidly mounted on the central frame and overhanging the forward frame;two pipes leading from the live steam supply of the boiler to thecylinders hausting into the smoke box 0 on the intermediate frame; aflexibly connected pipe leading from cm of said cylinders on theintermediate harm to the cylinders on the forward frame; and a fiexiblconnected pipe leading from the other cy inder on the inter-medlateframe to the two cylinders on the rear frame.

3. The combination in a locomotive, of three frames connected togetherby articulated joints; independent driving mechanism mounted on eachframe; tw-o cylinders mounted on each frame, all of the cylinders beingof the same diameter; a boiler mounted on the intermediate frame andoverhanging one of the other frames; two high pressure pipes leadingfrom the steam supply of the boiler to the cylinders on the intermediateframe; a pipe leading from one of the intermediate cylinders to the twocylinders at the forward end of the locomotive; and a pipe leading fromthe other cylinder on the intermediate frame to the cylinders mounted onthe rear frame.

4. The combination in a locomotive, of three frames connected togetherby articulated joints; independent driving mechanism mounted on eachframe; two cylinders mounted on each frame; all of the cylinders beingof the same diameter; a boiler mounted on the intermediate frame andoverhanging one of the other frames; two high pressure pipes leadingfrom the steam supply of the boiler to the cylinders on the intermediateframe; a pipe leading from one of the intermediate cylinders to the twocylinders at the forward end of thelocomotive; a pipe leading from theother cylinder on the intermediate frame to the cylinders mounted on therear frame; the forward 0 linders exthe boiler; and a feed Water heaterthrough which the exhaust passes from the rear cylinders.

5. The combination in a locomotive, of three frames connected togetherby articulated joints; driving wheels mounted on each frame; twocylinders mounted on each frame and connected to the driving wheels sothat the mechanism on each frame is in dependently driven; a 'boilermounted on the intermediate frame and overhanging the forward frame; atender mounted on the rear frame; a pipe leading from the steam dome ofthe boiler; two high pressure pipes leading from said pipe to the steamchest of the cylinders on the intermediate frame; a flexibly connectedpipe leadin from the exhaust side of one of said cy inders to the steamchest of the forward cylinders; a flexibly connected pipe leading fromthe cylinder on the intermediate frame to the steam chest of the lowpressure cylinders on the rear frame; a ipe leading from the exhaustside of both fbrward low pressure cylinders to the smoke box of theboiler, said pipe having a. flexible connection; a pipe leading fromname to this specification, in the presence of ghedexhaust side of bothrein cylinders; a two subscribing witnesses.

ee water eater connecte to sai pipe; V and an exhaust pipe connectedwith the feed SAMUEL VAUCLAIN 5 water heater and terminating at the rearof Witnesses:

the tender. Jerm- P. Sms,

In testimony whereof, I have signed my KENNETH Rusn'ron.

